class Example01{
	public static void main(String[] args)throws Exception{
		String str1 = new String();
		String str2 = new String("abc");
		char[] charArray = new char[]{'a','B','c'};
		String str3 = new String(charArray);
		
		System.out.println("a"+str1+"b");
		System.out.println(str2);
		System.out.println(str3);
	}
}